1.

If a is a subset of B prove that a x c is equal to b x c

Answer»

SOLUTION

TO PROVE

If A ⊆ B then A × C ⊆ B × C

EVALUATION

Let (x, y) ∈ A × C

⇒ x ∈ A ∧ y ∈ C

⇒ x ∈ B ∧ y ∈ C ( ∵ A ⊆ B )

⇒ (x, y) ∈ A × C

∴ A × C ⊆ B × C

Hence PROVED

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Learn more from Brainly :-

1. If n(A) = 300, n(A∪B) = 500, n(A∩B) = 50 and n(B′) = 350, find n(B) and n(U).

brainly.in/question/4193770

2. If A, B and C are any three SETS

then prove the following USING venn-diagram

A∩(BUC) = (A∩B) U (A∩C)

brainly.in/question/23234089



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